Avia B-122
| Avia B-122 | |
|---|---|
.jpg) Avia B-122 |
|
| Type: | Sport plane |
| Design country: | |
| Manufacturer: | |
| First flight: |
1934 |
| Production time: |
1936-1938 |
| Number of pieces: |
> 100 |
The Avia B-122 was a Czechoslovak aerobatic aircraft of the 1930s. During this time it took part in several international competitions, in which it was also quite successful.
history
The aircraft was designed by František Novotny as a biplane with wooden wings and a tubular steel fuselage. The cladding in the bow area was made of sheet steel, the rest of the aircraft was covered with fabric.
The first prototype with the registration number OK-AVI flew for the first time in the spring of 1934, equipped with a seven-cylinder radial engine Walter Castor . The OK-AVE followed a little later with modified oars and a Castor II engine with NACA canopy . Numerous aerobatic competitions were contested with this machine.
The Czechoslovak armed forces ordered 45 machines with the military designation Bs-122 , which were also delivered.
In 1936 the improved Ba-122 appeared with the more powerful Avia-Rk-17 engine. A total of six aircraft of the type took part in the aerobatics competition at the Zurich meeting in 1937. Three with the Avia engine started in class B (aircraft with engines of 10–20 l displacement). Lt. František Novák first place, Lt. Petr Siroký the third and adj. Josef Hubáček the fourth. The other three Ba-122 , which had nine-cylinder Walter Pollux as a drive, won in class C (engines of over 20 l displacement) with the Lt. Novák and Siroký as well as Adj. Vyborní took the three places, although they had no other competitors.
The Czechoslovak military ordered 35 of this type, 15 more went to the Soviet Air Force .
After the occupation of the ČSR by German troops, the installed government took over twelve Ba-122 and Bs-122, twelve more went to Bulgaria . The successor models were the special competition version B-222 , the B-322 with a closed cockpit and the B-422 , in which the upper wing was offset downwards and connected directly to the fuselage.
Military users
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- Bulgarian Air Force : 12 taken over by the Czechoslovak Air Force after the occupation
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- Air Force : 12 taken over by the Czechoslovak Air Force after the occupation
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- Slovak Air Force
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- Soviet Air Force : 15 Ba-122s were procured before the war
- Czechoslovak Air Force : 45 Bs-122 and 35 Ba-122
Technical specifications
| Parameter | Data (Avia Ba-122) |
|---|---|
| crew | 1 |
| span | 8.85 m |
| length | 6.80 m |
| height | 2.90 m |
| Wing area | 21.55 m² |
| Empty mass | 861 kg |
| Takeoff mass | 1081 kg |
| drive | an air-cooled seven - cylinder radial engine Rk-17 with 265 kW (360 PS) or an air-cooled nine-cylinder radial engine Walter Pollux II with 290 kW (approx. 390 PS) |
| Top speed | 270 km / h |
| Cruising speed | 230 km / h |
| Summit height | 7000 m |
| Range | 460 km |
See also
literature
- C. G. Gray: Jane's All the World's Aircraft 1938 . David & Charles, London 1972, ISBN 0-7153-5734-4 , pp. 89c-90c .
